Class DefaultConstructorInfo
- Namespace
- Ecng.Reflection
- Assembly
- Ecng.Reflection.dll
Initializes a new instance of the DefaultConstructorInfo class.
public class DefaultConstructorInfo : ConstructorInfo, ICustomAttributeProvider- Inheritance
-
DefaultConstructorInfo
- Implements
- Inherited Members
- Extension Methods
Constructors
DefaultConstructorInfo(Type)
Initializes a new instance of the DefaultConstructorInfo class.
public DefaultConstructorInfo(Type type)Parameters
typeTypeThe type.
Properties
Attributes
Gets the attributes associated with this method.
public override MethodAttributes Attributes { get; }Property Value
DeclaringType
Gets the class that declares this member.
public override Type DeclaringType { get; }Property Value
MethodHandle
Gets a handle to the internal metadata representation of a method.
public override RuntimeMethodHandle MethodHandle { get; }Property Value
Name
Gets the name of the current member.
public override string Name { get; }Property Value
ReflectedType
Gets the class object that was used to obtain this instance of MemberInfo.
public override Type ReflectedType { get; }Property Value
Methods
GetCustomAttributes(bool)
When overridden in a derived class, returns an array containing all the custom attributes.
public override object[] GetCustomAttributes(bool inherit)Parameters
inheritboolSpecifies whether to search this member's inheritance chain to find the attributes.
Returns
- object[]
An array that contains all the custom attributes, or an array with zero elements if no attributes are defined.
GetCustomAttributes(Type, bool)
When overridden in a derived class, returns an array of custom attributes identified by Type.
public override object[] GetCustomAttributes(Type attributeType, bool inherit)Parameters
attributeTypeTypeThe type of attribute to search for. Only attributes that are assignable to this type are returned.
inheritboolSpecifies whether to search this member's inheritance chain to find the attributes.
Returns
- object[]
An array of custom attributes applied to this member, or an array with zero (0) elements if no attributes have been applied.
Exceptions
- ArgumentNullException
If
attributeTypeis null.- TypeLoadException
The custom attribute type cannot be loaded.
GetMethodImplementationFlags()
When overridden in a derived class, returns the MethodImplAttributes flags.
public override MethodImplAttributes GetMethodImplementationFlags()Returns
- MethodImplAttributes
The MethodImplAttributes flags.
GetParameters()
When overridden in a derived class, gets the parameters of the specified method or constructor.
public override ParameterInfo[] GetParameters()Returns
- ParameterInfo[]
An array of type ParameterInfo containing information that matches the signature of the method (or constructor) reflected by this MethodBase instance.
Invoke(object, BindingFlags, Binder, object[], CultureInfo)
When overridden in a derived class, invokes the reflected method or constructor with the given parameters.
public override object Invoke(object obj, BindingFlags invokeAttr, Binder binder, object[] parameters, CultureInfo culture)Parameters
objobjectThe object on which to invoke the method or constructor. If a method is static, this argument is ignored. If a constructor is static, this argument must be null or an instance of the class that defines the constructor.
invokeAttrBindingFlagsA bit mask that is a combination of 0 or more bit flags from BindingFlags. If binder is null, this parameter is assigned the value Default; thus, whatever you pass in is ignored.
binderBinderAn object that enables the binding, coercion of argument types, invocation of members, and retrieval of MemberInfo objects via reflection. If binder is null, the default binder is used.
parametersobject[]An argument list for the invoked method or constructor. This is an array of objects with the same number, order, and type as the parameters of the method or constructor to be invoked. If there are no parameters, this should be null.If the method or constructor represented by this instance takes a ByRef parameter, there is no special attribute required for that parameter in order to invoke the method or constructor using this function. Any object in this array that is not explicitly initialized with a value will contain the default value for that object type. For reference-type elements, this value is null. For value-type elements, this value is 0, 0.0, or false, depending on the specific element type.
cultureCultureInfoAn instance of CultureInfo used to govern the coercion of types. If this is null, the CultureInfo for the current thread is used. (This is necessary to convert a String that represents 1000 to a Double value, for example, since 1000 is represented differently by different cultures.)
Returns
- object
An Object containing the return value of the invoked method, or null in the case of a constructor, or null if the method's return type is void. Before calling the method or constructor, Invoke checks to see if the user has access permission and verify that the parameters are valid.
Exceptions
- MethodAccessException
The caller does not have permission to execute the constructor.
- InvalidOperationException
The type that declares the method is an open generic type. That is, the ContainsGenericParameters property returns true for the declaring type.
- TargetInvocationException
The invoked method or constructor throws an exception.
- TargetParameterCountException
The parameters array does not have the correct number of arguments.
- ArgumentException
The type of the parameters parameter does not match the signature of the method or constructor reflected by this instance.
- TargetException
The obj parameter is null and the method is not static.-or- The method is not declared or inherited by the class of obj. -or-A static constructor is invoked, and obj is neither null nor an instance of the class that declared the constructor.
Invoke(BindingFlags, Binder, object[], CultureInfo)
When implemented in a derived class, invokes the constructor reflected by this ConstructorInfo with the specified arguments, under the constraints of the specified Binder.
public override object Invoke(BindingFlags invokeAttr, Binder binder, object[] parameters, CultureInfo culture)Parameters
invokeAttrBindingFlagsOne of the BindingFlags values that specifies the type of binding.
binderBinderA Binder that defines a set of properties and enables the binding, coercion of argument types, and invocation of members using reflection. If binder is null, then Binder.DefaultBinding is used.
parametersobject[]An array of type Object used to match the number, order and type of the parameters for this constructor, under the constraints of binder. If this constructor does not require parameters, pass an array with zero elements, as in Object[] parameters = new Object[0]. Any object in this array that is not explicitly initialized with a value will contain the default value for that object type. For reference-type elements, this value is null. For value-type elements, this value is 0, 0.0, or false, depending on the specific element type.
cultureCultureInfoA CultureInfo used to govern the coercion of types. If this is null, the CultureInfo for the current thread is used.
Returns
- object
An instance of the class associated with the constructor.
Exceptions
- TargetInvocationException
The invoked constructor throws an exception.
- TargetParameterCountException
An incorrect number of parameters was passed.
- NotSupportedException
Creation of TypedReference, ArgIterator, and RuntimeArgumentHandle types is not supported.
- MethodAccessException
The constructor is private or protected, and the caller lacks MemberAccess.
- MemberAccessException
The class is abstract.-or- The constructor is a class initializer.
- ArgumentException
The parameters array does not contain values that match the types accepted by this constructor, under the constraints of the binder.
- SecurityException
The caller does not have the necessary code access permissions.
IsDefined(Type, bool)
When overridden in a derived class, indicates whether one or more instance of attributeType is applied to this member.
public override bool IsDefined(Type attributeType, bool inherit)Parameters
attributeTypeTypeThe Type object to which the custom attributes are applied.
inheritboolSpecifies whether to search this member's inheritance chain to find the attributes.
Returns
- bool
true if one or more instance of
attributeTypeis applied to this member; otherwise false.
ToString()
public override string ToString()